1. 85 percent of soy grown in the US (58.6 percent worldwide) is genetically modified (GM). The purpose of genetic modification is to impart resistance to the toxic herbicide Roundup. The motive is to increase farming efficiency and provide higher margins for soy suppliers. The primary problem is that this soy is laden with this toxic herbicide. Second, this soy also contain genes from bacteria that produce a protein that has never been part of the human food supply.

GM soy has been linked to an increase in allergies. Disturbingly, the onlypublished human feeding study on GM foods ever conducted confirmed, the gene inserted into GM soy transfers into the DNA of our gut bacteria and continues to live and function. This means that years after someone stops eating GM soy, they may still have a potentially allergenic protein continuously being produced in their intestines.

Soy foods contain anti-nutritional factors such as saponins, soyatoxin, phytates, protease inhibitors, oxalates, goitrogens and estrogens. Some of these factors interfere with the enzymes you need to digest protein. While a small amount of anti-nutrients would not likely cause a problem, the amount of soy which most Americans are eating now appears extremely high. (From 1992 to 2006, soy food sales increased from $300 million to nearly $4 billion, according to the Soyfoods Association of North America. This growth came about due to a massive shift in attitudes about soy. This shift was no accident—it was the result of a massive investment in advertising by the soy industry that's been wildly successful.)

3. Soy contains hemagglutinin.

Hemagglutinin is a clot-promoting substance that causes red blood cells to clump together. These clumped cells are unable to properly carry oxygen to your tissues.

Phytic acid (Phytates) bonds to metal ions, preventing the absorption of minerals, including calcium, magnesium, iron, and zinc -- which are co-factors for optimal biochemistry in your body. This is particularly problematic for vegetarians, because eating meat reduces the mineral-blocking effects of these phytates (so it is helpful—if you do eat soy—to also eat meat).

Isoflavones are a type of phytoestrogen, which is a plant compound resembling human estrogen. These compounds mimic and recurrently block the hormone estrogen, and have been found to have adverse effects on various human tissues. Soy phytoestrogens are known to disrupt endocrine function, may cause infertility, and may promote breast cancer in women.

Drinking even two glasses of soymilk daily for one month provides enough of these compounds to alter the menstrual cycle. Although the FDA regulates estrogen-containing products, no warnings exist on soy.

Nearly 20 percent of U.S. infants are fed soy formula, but the estrogens in soy can irreversibly harm your baby's sexual development and reproductive health. Infants fed soy formula take in an estimated five birth control pills' worth of estrogen every day. Infants fed soy formula have up to 20,000 times the amount of estrogen in circulation as babies fed other formulas!For additional information and a video and additional articles and evidence on why one should avoid soy, visit the following website: http://www.phoenixorganicfeed.com/why-no-soy.html